EP 3977308 B1 20231122 - LEARNING-BASED QUERY PLAN CACHE FOR CAPTURING LOW-COST QUERY PLAN
Title (en)
LEARNING-BASED QUERY PLAN CACHE FOR CAPTURING LOW-COST QUERY PLAN
Title (de)
LERNBASIERTER ABFRAGEPLAN-ZWISCHENSPEICHER ZUR ERFASSUNG EINES KOSTENGÜNSTIGEN ABFRAGEPLANS
Title (fr)
CACHE DE PLAN DE REQUÊTE BASÉ SUR L'APPRENTISSAGE POUR CAPTURER UN PLAN DE REQUÊTE À FAIBLE COÛT
Publication
Application
Priority
US 2019033929 W 20190524
Abstract (en)
[origin: WO2020242439A1] A query processing device is provided, including a processor coupled to a communication interface and a query storage. The processor receives a current submission of a query in a training mode, a stored prior execution plan, and stored statistics for the prior execution plan. The processor generates a current execution plan for the query, executes the current execution plan, and collects statistics. The processor stores the current execution plan and the statistics in the query storage and determines, based on the current execution plan, that the query is not in the training mode. The processor selects an execution plan for the query from among a plurality of stored execution plans for the query, including the prior execution plan and the current execution plan, and stores the selected execution plan for the query in the query storage with an indication that the query is not in the training mode.
IPC 8 full level
G06F 18/21 (2023.01)
CPC (source: EP US)
G06F 16/24524 (2019.01 - EP); G06F 16/24542 (2019.01 - EP US); G06F 18/217 (2023.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2020242439 A1 20201203; CN 114041128 A 20220211; EP 3977308 A1 20220406; EP 3977308 B1 20231122; EP 4303743 A2 20240110; EP 4303743 A3 20240327; US 2022050843 A1 20220217
DOCDB simple family (application)
US 2019033929 W 20190524; CN 201980096780 A 20190524; EP 19731043 A 20190524; EP 23211055 A 20190524; US 202117452948 A 20211029